Ek 50 is the same pa80/60/50/ microarranger board ( same sound from 2001, triton classic engine).
Minus editing features, midi sockets,, plus battery operated and MP3/wave playback
Sound wise , including drums, it blows any Roland/ Yamaha sub $600 category with ease. Yes it has professional synth engine ( even though it's older generation) , can't compare to budget Roland's or Yamahas.
It has 4 variations, full 4 way joy stick, relatively light weight compact, you can even pay with the band due to decent sound/ splits. Again , not so much with cheap yamahas or Roland's.
Been following this discussion (as well as Uncle Dave's viccisitudes with this new Korg keyboard) with some kind of amusement.
Janman is entirely corrrect by stating that the Korg Micro Arranger is sample,sound and style wise completely identical to the firts PA generation ( PA80, PA60,PA50) and even virtually 100% identical to its top arranger at the time the PA1X.
As such the EK50 cannot but disappoint. Getting the Micro Arranger instead of the EK50 as such is better as long as you have got bigger keys available. If not the PA50 or (later version) PA50sd is a great alternative.
I also disagree with UD findings as regards the PA1000 versus the PA700, see thread Uncle Dave.
And last but not least I would like to draw your attention to the new and updated sound module the V3 ( versions for Korg are called the Kommex), see my new thread on that subject:
http://www.synthzone.com/forum/ubbthreads.php/topics/471934#Post471934regards,
John